I agree with posters above. The SSAT is a very small part of the picture. And I have never ever heard that it tests high school level anything. My kid took it with zero prep ( and from a public school) and scored 99%. And yet got into only 2/4 schools.
The spaces are limited for each of these schools. One has to factor in boy/girl, day/boarding, Full pay/FA, region and then factor in everything else. My kid had really good activities and grades and was surprised not to be everywhere. lol. It all worked out. But it is definitely not a shoe-in at any school.
There are an amazing pool of candidates at all these schools. You should definitely contact all of the coaches and spend time on your essays.